drivers/media/video/saa7134/saa7134-tvaudio.c

   1 /*
   2  * device driver for philips saa7134 based TV cards
   3  * tv audio decoder (fm stereo, nicam, ...)
   4  *
   5  * (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/init.h>
  23 #include <linux/list.h>
  24 #include <linux/module.h>
  25 #include <linux/kernel.h>
  26 #include <linux/slab.h>
  27 #include <linux/delay.h>
  28 #include <linux/smp_lock.h>
  29 #include <asm/div64.h>
  30
  31 #include "saa7134-reg.h"
  32 #include "saa7134.h"
  33
  34 /* ------------------------------------------------------------------ */
  35
  36 static unsigned int audio_debug = 0;
  37 MODULE_PARM(audio_debug,"i");
  38 MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
  39
  40 static unsigned int audio_carrier = 0;
  41 MODULE_PARM(audio_carrier,"i");
  42 MODULE_PARM_DESC(audio_carrier,"audio carrier location");
  43
  44 static unsigned int audio_ddep = 0;
  45 MODULE_PARM(audio_ddep,"i");
  46 MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
  47
  48 static int audio_clock_override = UNSET;
  49 MODULE_PARM(audio_clock_override, "i");
  50
  51 static int audio_clock_tweak = 0;
  52 MODULE_PARM(audio_clock_tweak, "i");
  53 MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
  54
  55 #define dprintk(fmt, arg...)    if (audio_debug) \
  56         printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
  57 #define d2printk(fmt, arg...)   if (audio_debug > 1) \
  58         printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
  59
  60 #define print_regb(reg) printk("%s:   reg 0x%03x [%-16s]: 0x%02x\n", \
  61                 dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
  62
  63 #define SCAN_INITIAL_DELAY     (HZ)
  64 #define SCAN_SAMPLE_DELAY      (HZ/5)
  65 #define SCAN_SUBCARRIER_DELAY  (HZ*2)
  66
  67 /* ------------------------------------------------------------------ */
  68 /* saa7134 code                                                       */
  69
  70 static struct saa7134_tvaudio tvaudio[] = {
  71         {
  72                 .name          = "PAL-B/G FM-stereo",
  73                 .std           = V4L2_STD_PAL,
  74                 .mode          = TVAUDIO_FM_BG_STEREO,
  75                 .carr1         = 5500,
  76                 .carr2         = 5742,
  77         },{
  78                 .name          = "PAL-D/K1 FM-stereo",
  79                 .std           = V4L2_STD_PAL,
  80                 .carr1         = 6500,
  81                 .carr2         = 6258,
  82                 .mode          = TVAUDIO_FM_BG_STEREO,
  83         },{
  84                 .name          = "PAL-D/K2 FM-stereo",
  85                 .std           = V4L2_STD_PAL,
  86                 .carr1         = 6500,
  87                 .carr2         = 6742,
  88                 .mode          = TVAUDIO_FM_BG_STEREO,
  89         },{
  90                 .name          = "PAL-D/K3 FM-stereo",
  91                 .std           = V4L2_STD_PAL,
  92                 .carr1         = 6500,
  93                 .carr2         = 5742,
  94                 .mode          = TVAUDIO_FM_BG_STEREO,
  95         },{
  96                 .name          = "PAL-B/G NICAM",
  97                 .std           = V4L2_STD_PAL,
  98                 .carr1         = 5500,
  99                 .carr2         = 5850,
 100                 .mode          = TVAUDIO_NICAM_FM,
 101         },{
 102                 .name          = "PAL-I NICAM",
 103                 .std           = V4L2_STD_PAL,
 104                 .carr1         = 6000,
 105                 .carr2         = 6552,
 106                 .mode          = TVAUDIO_NICAM_FM,
 107         },{
 108                 .name          = "PAL-D/K NICAM",
 109                 .std           = V4L2_STD_PAL,
 110                 .carr1         = 6500,
 111                 .carr2         = 5850,
 112                 .mode          = TVAUDIO_NICAM_FM,
 113         },{
 114                 .name          = "SECAM-L NICAM",
 115                 .std           = V4L2_STD_SECAM,
 116                 .carr1         = 6500,
 117                 .carr2         = 5850,
 118                 .mode          = TVAUDIO_NICAM_AM,
 119         },{
 120                 .name          = "SECAM-D/K",
 121                 .std           = V4L2_STD_SECAM,
 122                 .carr1         = 6500,
 123                 .carr2         = -1,
 124                 .mode          = TVAUDIO_FM_MONO,
 125         },{
 126                 .name          = "NTSC-M",
 127                 .std           = V4L2_STD_NTSC,
 128                 .carr1         = 4500,
 129                 .carr2         = -1,
 130                 .mode          = TVAUDIO_FM_MONO,
 131         },{
 132                 .name          = "NTSC-A2 FM-stereo",
 133                 .std           = V4L2_STD_NTSC,
 134                 .carr1         = 4500,
 135                 .carr2         = 4724,
 136                 .mode          = TVAUDIO_FM_K_STEREO,
 137         }
 138 };
 139 #define TVAUDIO (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio))
 140
 141 /* ------------------------------------------------------------------ */
 142
 143 static void tvaudio_init(struct saa7134_dev *dev)
 144 {
 145         int clock = saa7134_boards[dev->board].audio_clock;
 146
 147         if (UNSET != audio_clock_override)
 148                 clock = audio_clock_override;
 149
 150         /* init all audio registers */
 151         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x00);
 152         if (need_resched())
 153                 schedule();
 154         else
 155                 udelay(10);
 156
 157         saa_writeb(SAA7134_AUDIO_CLOCK0,      clock        & 0xff);
 158         saa_writeb(SAA7134_AUDIO_CLOCK1,     (clock >>  8) & 0xff);
 159         saa_writeb(SAA7134_AUDIO_CLOCK2,     (clock >> 16) & 0xff);
 160         saa_writeb(SAA7134_AUDIO_PLL_CTRL,   0x01);
 161
 162         saa_writeb(SAA7134_NICAM_ERROR_LOW,  0x14);
 163         saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
 164         saa_writeb(SAA7134_MONITOR_SELECT,   0xa0);
 165         saa_writeb(SAA7134_FM_DEMATRIX,      0x80);
 166 }
 167
 168 static u32 tvaudio_carr2reg(u32 carrier)
 169 {
 170         u64 a = carrier;
 171
 172         a <<= 24;
 173         do_div(a,12288);
 174         return a;
 175 }
 176
 177 static void tvaudio_setcarrier(struct saa7134_dev *dev,
 178                                int primary, int secondary)
 179 {
 180         if (-1 == secondary)
 181                 secondary = primary;
 182         saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
 183         saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
 184 }
 185
 186 static void mute_input_7134(struct saa7134_dev *dev)
 187 {
 188         unsigned int mute;
 189         struct saa7134_input *in;
 190         int ausel=0, ics=0, ocs=0;
 191         int mask;
 192
 193         /* look what is to do ... */
 194         in   = dev->input;
 195         mute = (dev->ctl_mute ||
 196                 (dev->automute  &&  (&card(dev).radio) != in));
 197         if (PCI_DEVICE_ID_PHILIPS_SAA7130 == dev->pci->device &&
 198             card(dev).mute.name) {
 199                 /* 7130 - we'll mute using some unconnected audio input */
 200                 if (mute)
 201                         in = &card(dev).mute;
 202         }
 203         if (dev->hw_mute  == mute &&
 204             dev->hw_input == in) {
 205                 dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
 206                         mute,in->name);
 207                 return;
 208         }
 209
 210         dprintk("ctl_mute=%d automute=%d input=%s  =>  mute=%d input=%s\n",
 211                 dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
 212         dev->hw_mute  = mute;
 213         dev->hw_input = in;
 214
 215         if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
 216                 /* 7134 mute */
 217                 saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ? 0xff : 0xbb);
 218
 219         /* switch internal audio mux */
 220         switch (in->amux) {
 221         case TV:    ausel=0xc0; ics=0x00; ocs=0x02; break;
 222         case LINE1: ausel=0x80; ics=0x00; ocs=0x00; break;
 223         case LINE2: ausel=0x80; ics=0x08; ocs=0x01; break;
 224         }
 225         saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
 226         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
 227         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
 228
 229         /* switch gpio-connected external audio mux */
 230         if (0 == card(dev).gpiomask)
 231                 return;
 232         mask = card(dev).gpiomask;
 233         saa_andorl(SAA7134_GPIO_GPMODE0 >> 2,   mask, mask);
 234         saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
 235         saa7134_track_gpio(dev,in->name);
 236 }
 237
 238 static void tvaudio_setmode(struct saa7134_dev *dev,
 239                             struct saa7134_tvaudio *audio,
 240                             char *note)
 241 {
 242         int acpf, tweak = 0;
 243
 244         if (dev->tvnorm->id == V4L2_STD_NTSC) {
 245                 acpf = 0x19066;
 246         } else {
 247                 acpf = 0x1e000;
 248         }
 249         if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
 250                 tweak = audio_clock_tweak;
 251
 252         if (note)
 253                 dprintk("tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
 254                         note,audio->name,
 255                         audio->carr1 / 1000, audio->carr1 % 1000,
 256                         audio->carr2 / 1000, audio->carr2 % 1000,
 257                         acpf, tweak);
 258
 259         acpf += tweak;
 260         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
 261         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
 262         saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
 263         tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
 264
 265         switch (audio->mode) {
 266         case TVAUDIO_FM_MONO:
 267         case TVAUDIO_FM_BG_STEREO:
 268                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 269                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 270                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 271                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 272                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 273                 break;
 274         case TVAUDIO_FM_K_STEREO:
 275                 saa_writeb(SAA7134_DEMODULATOR,               0x00);
 276                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x01);
 277                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x22);
 278                 saa_writeb(SAA7134_FM_DEMATRIX,               0x80);
 279                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa0);
 280                 break;
 281         case TVAUDIO_NICAM_FM:
 282                 saa_writeb(SAA7134_DEMODULATOR,               0x10);
 283                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 284                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 285                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 286                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 287                 break;
 288         case TVAUDIO_NICAM_AM:
 289                 saa_writeb(SAA7134_DEMODULATOR,               0x12);
 290                 saa_writeb(SAA7134_DCXO_IDENT_CTRL,           0x00);
 291                 saa_writeb(SAA7134_FM_DEEMPHASIS,             0x44);
 292                 saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT,  0xa1);
 293                 saa_writeb(SAA7134_NICAM_CONFIG,              0x00);
 294                 break;
 295         case TVAUDIO_FM_SAT_STEREO:
 296                 /* not implemented (yet) */
 297                 break;
 298         }
 299 }
 300
 301 static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
 302 {
 303         DECLARE_WAITQUEUE(wait, current);
 304
 305         add_wait_queue(&dev->thread.wq, &wait);
 306         if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
 307                 set_current_state(TASK_INTERRUPTIBLE);
 308                 if (timeout < 0)
 309                         schedule();
 310                 else
 311                         schedule_timeout(timeout);
 312         }
 313         remove_wait_queue(&dev->thread.wq, &wait);
 314         return dev->thread.scan1 != dev->thread.scan2;
 315 }
 316
 317 static int tvaudio_checkcarrier(struct saa7134_dev *dev, int carrier)
 318 {
 319         __s32 left,right,value;
 320
 321         if (audio_debug > 1) {
 322                 int i;
 323                 dprintk("debug %d:",carrier);
 324                 for (i = -150; i <= 150; i += 30) {
 325                         tvaudio_setcarrier(dev,carrier+i,carrier+i);
 326                         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 327                         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 328                                 return -1;
 329                         value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 330                         if (0 == i)
 331                                 printk("  #  %6d  # ",value >> 16);
 332                         else
 333                                 printk(" %6d",value >> 16);
 334                 }
 335                 printk("\n");
 336         }
 337
 338         tvaudio_setcarrier(dev,carrier-90,carrier-90);
 339         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 340         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 341                 return -1;
 342         left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 343
 344         tvaudio_setcarrier(dev,carrier+90,carrier+90);
 345         saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 346         if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
 347                 return -1;
 348         right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
 349
 350         left >>= 16;
 351         right >>= 16;
 352         value = left > right ? left - right : right - left;
 353         dprintk("scanning %d.%03d MHz =>  dc is %5d [%d/%d]\n",
 354                 carrier/1000,carrier%1000,value,left,right);
 355         return value;
 356 }
 357
 358 #if 0
 359 static void sifdebug_dump_regs(struct saa7134_dev *dev)
 360 {
 361         print_regb(AUDIO_STATUS);
 362         print_regb(IDENT_SIF);
 363         print_regb(LEVEL_READOUT1);
 364         print_regb(LEVEL_READOUT2);
 365         print_regb(DCXO_IDENT_CTRL);
 366         print_regb(DEMODULATOR);
 367         print_regb(AGC_GAIN_SELECT);
 368         print_regb(MONITOR_SELECT);
 369         print_regb(FM_DEEMPHASIS);
 370         print_regb(FM_DEMATRIX);
 371         print_regb(SIF_SAMPLE_FREQ);
 372         print_regb(ANALOG_IO_SELECT);
 373 }
 374 #endif
 375
 376 static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
 377 {
 378         __u32 idp,nicam;
 379         int retval = -1;
 380
 381         switch (audio->mode) {
 382         case TVAUDIO_FM_MONO:
 383                 return V4L2_TUNER_SUB_MONO;
 384         case TVAUDIO_FM_K_STEREO:
 385         case TVAUDIO_FM_BG_STEREO:
 386                 idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
 387                 if (0x03 == (idp & 0x03))
 388                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 389                 else if (0x05 == (idp & 0x05))
 390                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 391                 else if (0x01 == (idp & 0x01))
 392                         retval = V4L2_TUNER_SUB_MONO;
 393                 break;
 394         case TVAUDIO_FM_SAT_STEREO:
 395                 /* not implemented (yet) */
 396                 break;
 397         case TVAUDIO_NICAM_FM:
 398         case TVAUDIO_NICAM_AM:
 399                 nicam = saa_readb(SAA7134_NICAM_STATUS);
 400                 switch (nicam & 0x0b) {
 401                 case 0x08:
 402                         retval = V4L2_TUNER_SUB_MONO;
 403                         break;
 404                 case 0x09:
 405                         retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 406                         break;
 407                 case 0x0a:
 408                         retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 409                         break;
 410                 }
 411                 break;
 412         }
 413         if (retval != -1)
 414                 dprintk("found audio subchannels:%s%s%s%s\n",
 415                         (retval & V4L2_TUNER_SUB_MONO)   ? " mono"   : "",
 416                         (retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
 417                         (retval & V4L2_TUNER_SUB_LANG1)  ? " lang1"  : "",
 418                         (retval & V4L2_TUNER_SUB_LANG2)  ? " lang2"  : "");
 419         return retval;
 420 }
 421
 422 static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
 423                              u32 mode)
 424 {
 425         static char *name[] = {
 426                 [ V4L2_TUNER_MODE_MONO   ] = "mono",
 427                 [ V4L2_TUNER_MODE_STEREO ] = "stereo",
 428                 [ V4L2_TUNER_MODE_LANG1  ] = "lang1",
 429                 [ V4L2_TUNER_MODE_LANG2  ] = "lang2",
 430         };
 431         static u32 fm[] = {
 432                 [ V4L2_TUNER_MODE_MONO   ] = 0x00,  /* ch1  */
 433                 [ V4L2_TUNER_MODE_STEREO ] = 0x80,  /* auto */
 434                 [ V4L2_TUNER_MODE_LANG1  ] = 0x00,  /* ch1  */
 435                 [ V4L2_TUNER_MODE_LANG2  ] = 0x01,  /* ch2  */
 436         };
 437         u32 reg;
 438
 439         switch (audio->mode) {
 440         case TVAUDIO_FM_MONO:
 441                 /* nothing to do ... */
 442                 break;
 443         case TVAUDIO_FM_K_STEREO:
 444         case TVAUDIO_FM_BG_STEREO:
 445                 dprintk("setstereo [fm] => %s\n",
 446                         name[ mode % ARRAY_SIZE(name) ]);
 447                 reg = fm[ mode % ARRAY_SIZE(fm) ];
 448                 saa_writeb(SAA7134_FM_DEMATRIX, reg);
 449                 break;
 450         case TVAUDIO_FM_SAT_STEREO:
 451         case TVAUDIO_NICAM_AM:
 452         case TVAUDIO_NICAM_FM:
 453                 /* FIXME */
 454                 break;
 455         }
 456         return 0;
 457 }
 458
 459 static int tvaudio_thread(void *data)
 460 {
 461 #define MAX_SCAN 4
 462         static const int carr_pal[MAX_SCAN]     = { 5500, 6000, 6500 };
 463         static const int carr_ntsc[MAX_SCAN]    = { 4500 };
 464         static const int carr_secam[MAX_SCAN]   = { 6500 };
 465         static const int carr_default[MAX_SCAN] = { 4500, 5500, 6000, 6500 };
 466         struct saa7134_dev *dev = data;
 467         const int *carr_scan;
 468         int carr_vals[4];
 469         unsigned int i, audio;
 470         int max1,max2,carrier,rx,mode,lastmode;
 471
 472         daemonize("%s", dev->name);
 473         allow_signal(SIGTERM);
 474         for (;;) {
 475                 tvaudio_sleep(dev,-1);
 476                 if (dev->thread.shutdown || signal_pending(current))
 477                         goto done;
 478
 479         restart:
 480                 dev->thread.scan1 = dev->thread.scan2;
 481                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 482                 dev->tvaudio  = NULL;
 483                 tvaudio_init(dev);
 484                 dev->automute = 1;
 485                 mute_input_7134(dev);
 486
 487                 /* give the tuner some time */
 488                 if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
 489                         goto restart;
 490
 491                 /* find the main carrier */
 492                 carr_scan = carr_default;
 493                 if (dev->tvnorm->id & V4L2_STD_PAL)
 494                         carr_scan = carr_pal;
 495                 if (dev->tvnorm->id & V4L2_STD_NTSC)
 496                         carr_scan = carr_ntsc;
 497                 if (dev->tvnorm->id & V4L2_STD_SECAM)
 498                         carr_scan = carr_secam;
 499                 saa_writeb(SAA7134_MONITOR_SELECT,0x00);
 500                 tvaudio_setmode(dev,&tvaudio[0],NULL);
 501                 for (i = 0; i < MAX_SCAN; i++) {
 502                         if (!carr_scan[i])
 503                                 continue;
 504                         carr_vals[i] = tvaudio_checkcarrier(dev,carr_scan[i]);
 505                         if (dev->thread.scan1 != dev->thread.scan2)
 506                                 goto restart;
 507                 }
 508                 for (carrier = 0, max1 = 0, max2 = 0, i = 0; i < MAX_SCAN; i++) {
 509                         if (!carr_scan[i])
 510                                 continue;
 511                         if (max1 < carr_vals[i]) {
 512                                 max2 = max1;
 513                                 max1 = carr_vals[i];
 514                                 carrier = carr_scan[i];
 515                         } else if (max2 < carr_vals[i]) {
 516                                 max2 = carr_vals[i];
 517                         }
 518                 }
 519
 520                 if (0 != carrier && max1 > 2000 && max1 > max2*3) {
 521                         /* found good carrier */
 522                         dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
 523                                 dev->tvnorm->name, carrier/1000, carrier%1000,
 524                                 max1, max2);
 525                         dev->last_carrier = carrier;
 526                 } else if (0 != audio_carrier) {
 527                         /* no carrier -- try insmod option as fallback */
 528                         carrier = audio_carrier;
 529                         printk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 530                                "using %d.%03d MHz [insmod option]\n",
 531                                dev->name, carrier/1000, carrier%1000);
 532                 } else if (0 != dev->last_carrier) {
 533                         /* no carrier -- try last detected one as fallback */
 534                         carrier = dev->last_carrier;
 535                         printk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 536                                "using %d.%03d MHz [last detected]\n",
 537                                dev->name, carrier/1000, carrier%1000);
 538                 } else {
 539                         /* no carrier + no fallback -- try first in list */
 540                         carrier = carr_scan[0];
 541                         printk(KERN_WARNING "%s/audio: audio carrier scan failed, "
 542                                "using %d.%03d MHz [default]\n",
 543                                dev->name, carrier/1000, carrier%1000);
 544                 }
 545                 tvaudio_setcarrier(dev,carrier,carrier);
 546                 dev->automute = 0;
 547                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
 548                 saa7134_tvaudio_setmute(dev);
 549
 550                 /* find the exact tv audio norm */
 551                 for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
 552                         if (dev->tvnorm->id != UNSET &&
 553                             dev->tvnorm->id != tvaudio[i].std)
 554                                 continue;
 555                         if (tvaudio[i].carr1 != carrier)
 556                                 continue;
 557
 558                         if (UNSET == audio)
 559                                 audio = i;
 560                         tvaudio_setmode(dev,&tvaudio[i],"trying");
 561                         if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
 562                                 goto restart;
 563                         if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
 564                                 audio = i;
 565                                 break;
 566                         }
 567                 }
 568                 saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
 569                 if (UNSET == audio)
 570                         continue;
 571                 tvaudio_setmode(dev,&tvaudio[audio],"using");
 572                 tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
 573                 dev->tvaudio = &tvaudio[audio];
 574
 575                 lastmode = 42;
 576                 for (;;) {
 577                         if (tvaudio_sleep(dev,5*HZ))
 578                                 goto restart;
 579                         if (dev->thread.shutdown || signal_pending(current))
 580                                 break;
 581                         if (UNSET == dev->thread.mode) {
 582                                 rx = tvaudio_getstereo(dev,&tvaudio[i]);
 583                                 mode = saa7134_tvaudio_rx2mode(rx);
 584                         } else {
 585                                 mode = dev->thread.mode;
 586                         }
 587                         if (lastmode != mode) {
 588                                 tvaudio_setstereo(dev,&tvaudio[audio],mode);
 589                                 lastmode = mode;
 590                         }
 591                 }
 592         }
 593
 594  done:
 595         complete_and_exit(&dev->thread.exit, 0);
 596         return 0;
 597 }
 598
 599 /* ------------------------------------------------------------------ */
 600 /* saa7133 / saa7135 code                                             */
 601
 602 static char *stdres[0x20] = {
 603         [0x00] = "no standard detected",
 604         [0x01] = "B/G (in progress)",
 605         [0x02] = "D/K (in progress)",
 606         [0x03] = "M (in progress)",
 607
 608         [0x04] = "B/G A2",
 609         [0x05] = "B/G NICAM",
 610         [0x06] = "D/K A2 (1)",
 611         [0x07] = "D/K A2 (2)",
 612         [0x08] = "D/K A2 (3)",
 613         [0x09] = "D/K NICAM",
 614         [0x0a] = "L NICAM",
 615         [0x0b] = "I NICAM",
 616
 617         [0x0c] = "M Korea",
 618         [0x0d] = "M BTSC ",
 619         [0x0e] = "M EIAJ",
 620
 621         [0x0f] = "FM radio / IF 10.7 / 50 deemp",
 622         [0x10] = "FM radio / IF 10.7 / 75 deemp",
 623         [0x11] = "FM radio / IF sel / 50 deemp",
 624         [0x12] = "FM radio / IF sel / 75 deemp",
 625
 626         [0x13 ... 0x1e ] = "unknown",
 627         [0x1f] = "??? [in progress]",
 628 };
 629
 630 #define DSP_RETRY 32
 631 #define DSP_DELAY 16
 632
 633 static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
 634 {
 635         int state, count = DSP_RETRY;
 636
 637         state = saa_readb(SAA7135_DSP_RWSTATE);
 638         if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
 639                 printk("%s: dsp access error\n",dev->name);
 640                 /* FIXME: send ack ... */
 641                 return -EIO;
 642         }
 643         while (0 == (state & bit)) {
 644                 if (unlikely(0 == count)) {
 645                         printk("%s: dsp access wait timeout [bit=%s]\n",
 646                                dev->name,
 647                                (bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
 648                                (bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
 649                                (bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
 650                                "???");
 651                         return -EIO;
 652                 }
 653                 saa_wait(DSP_DELAY);
 654                 state = saa_readb(SAA7135_DSP_RWSTATE);
 655                 count--;
 656         }
 657         return 0;
 658 }
 659
 660 #if 0
 661 static int saa_dsp_readl(struct saa7134_dev *dev, int reg, u32 *value)
 662 {
 663         int err;
 664
 665         d2printk("dsp read reg 0x%x\n", reg<<2);
 666         saa_readl(reg);
 667         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_RDB);
 668         if (err < 0)
 669                 return err;
 670         *value = saa_readl(reg);
 671         d2printk("dsp read   => 0x%06x\n", *value & 0xffffff);
 672         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_IDA);
 673         if (err < 0)
 674                 return err;
 675         return 0;
 676 }
 677 #endif
 678
 679 int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
 680 {
 681         int err;
 682
 683         d2printk("dsp write reg 0x%x = 0x%06x\n",reg<<2,value);
 684         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 685         if (err < 0)
 686                 return err;
 687         saa_writel(reg,value);
 688         err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
 689         if (err < 0)
 690                 return err;
 691         return 0;
 692 }
 693
 694 static int getstereo_7133(struct saa7134_dev *dev)
 695 {
 696         int retval = V4L2_TUNER_SUB_MONO;
 697         u32 value;
 698
 699         value = saa_readl(0x528 >> 2);
 700         if (value & 0x20)
 701                 retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
 702         if (value & 0x40)
 703                 retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
 704         return retval;
 705 }
 706
 707 static int mute_input_7133(struct saa7134_dev *dev)
 708 {
 709         u32 reg = 0;
 710
 711         switch (dev->input->amux) {
 712         case TV:    reg = 0x02; break;
 713         case LINE1: reg = 0x00; break;
 714         case LINE2: reg = 0x01; break;
 715         }
 716         if (dev->ctl_mute)
 717                 reg = 0x07;
 718         saa_writel(0x594 >> 2, reg);
 719         return 0;
 720 }
 721
 722 static int tvaudio_thread_ddep(void *data)
 723 {
 724         struct saa7134_dev *dev = data;
 725         u32 value, norms;
 726
 727         daemonize("%s", dev->name);
 728         allow_signal(SIGTERM);
 729
 730         /* unmute */
 731         saa_dsp_writel(dev, 0x474 >> 2, 0x00);
 732         saa_dsp_writel(dev, 0x450 >> 2, 0x00);
 733
 734         for (;;) {
 735                 tvaudio_sleep(dev,-1);
 736                 if (dev->thread.shutdown || signal_pending(current))
 737                         goto done;
 738
 739         restart:
 740                 dev->thread.scan1 = dev->thread.scan2;
 741                 dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
 742
 743                 if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
 744                         /* insmod option override */
 745                         norms = (audio_ddep << 2) | 0x01;
 746                         dprintk("ddep override: %s\n",stdres[audio_ddep]);
 747                 } else{
 748                         /* (let chip) scan for sound carrier */
 749                         norms = 0;
 750                         if (dev->tvnorm->id & V4L2_STD_PAL) {
 751                                 dprintk("PAL scan\n");
 752                                 norms |= 0x2c; /* B/G + D/K + I */
 753                         }
 754                         if (dev->tvnorm->id & V4L2_STD_NTSC) {
 755                                 dprintk("NTSC scan\n");
 756                                 norms |= 0x40; /* M */
 757                         }
 758                         if (dev->tvnorm->id & V4L2_STD_SECAM) {
 759                                 dprintk("SECAM scan\n");
 760                                 norms |= 0x18; /* L + D/K */
 761                         }
 762                         if (0 == norms)
 763                                 norms = 0x7c; /* all */
 764                         dprintk("scanning:%s%s%s%s%s\n",
 765                                 (norms & 0x04) ? " B/G"  : "",
 766                                 (norms & 0x08) ? " D/K"  : "",
 767                                 (norms & 0x10) ? " L/L'" : "",
 768                                 (norms & 0x20) ? " I"    : "",
 769                                 (norms & 0x40) ? " M"    : "");
 770                 }
 771
 772                 /* quick & dirty -- to be fixed up later ... */
 773                 saa_dsp_writel(dev, 0x454 >> 2, 0);
 774                 saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
 775                 saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
 776                 saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
 777
 778                 if (tvaudio_sleep(dev,3*HZ))
 779                         goto restart;
 780                 value = saa_readl(0x528 >> 2) & 0xffffff;
 781
 782                 dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
 783                         value, stdres[value & 0x1f],
 784                         (value & 0x000020) ? ",stereo" : "",
 785                         (value & 0x000040) ? ",dual"   : "");
 786                 dprintk("detailed status: "
 787                         "%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
 788                         (value & 0x000080) ? " A2/EIAJ pilot tone "     : "",
 789                         (value & 0x000100) ? " A2/EIAJ dual "           : "",
 790                         (value & 0x000200) ? " A2/EIAJ stereo "         : "",
 791                         (value & 0x000400) ? " A2/EIAJ noise mute "     : "",
 792
 793                         (value & 0x000800) ? " BTSC/FM radio pilot "    : "",
 794                         (value & 0x001000) ? " SAP carrier "            : "",
 795                         (value & 0x002000) ? " BTSC stereo noise mute " : "",
 796                         (value & 0x004000) ? " SAP noise mute "         : "",
 797                         (value & 0x008000) ? " VDSP "                   : "",
 798
 799                         (value & 0x010000) ? " NICST "                  : "",
 800                         (value & 0x020000) ? " NICDU "                  : "",
 801                         (value & 0x040000) ? " NICAM muted "            : "",
 802                         (value & 0x080000) ? " NICAM reserve sound "    : "",
 803
 804                         (value & 0x100000) ? " init done "              : "");
 805         }
 806
 807  done:
 808         complete_and_exit(&dev->thread.exit, 0);
 809         return 0;
 810 }
 811
 812 /* ------------------------------------------------------------------ */
 813 /* common stuff + external entry points                               */
 814
 815 int saa7134_tvaudio_rx2mode(u32 rx)
 816 {
 817         u32 mode;
 818
 819         mode = V4L2_TUNER_MODE_MONO;
 820         if (rx & V4L2_TUNER_SUB_STEREO)
 821                 mode = V4L2_TUNER_MODE_STEREO;
 822         else if (rx & V4L2_TUNER_SUB_LANG1)
 823                 mode = V4L2_TUNER_MODE_LANG1;
 824         else if (rx & V4L2_TUNER_SUB_LANG2)
 825                 mode = V4L2_TUNER_MODE_LANG2;
 826         return mode;
 827 }
 828
 829 void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
 830 {
 831         switch (dev->pci->device) {
 832         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 833         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 834                 mute_input_7134(dev);
 835                 break;
 836         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 837         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 838                 mute_input_7133(dev);
 839                 break;
 840         }
 841 }
 842
 843 void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
 844                               struct saa7134_input *in)
 845 {
 846         dev->input = in;
 847         switch (dev->pci->device) {
 848         case PCI_DEVICE_ID_PHILIPS_SAA7130:
 849         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 850                 mute_input_7134(dev);
 851                 break;
 852         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 853         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 854                 mute_input_7133(dev);
 855                 break;
 856         }
 857 }
 858
 859 void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
 860 {
 861         switch (dev->pci->device) {
 862         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 863                 saa_writeb(SAA7134_CHANNEL1_LEVEL,     level & 0x1f);
 864                 saa_writeb(SAA7134_CHANNEL2_LEVEL,     level & 0x1f);
 865                 saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
 866                 break;
 867         }
 868 }
 869
 870 int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
 871 {
 872         int retval = V4L2_TUNER_SUB_MONO;
 873
 874         switch (dev->pci->device) {
 875         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 876                 if (dev->tvaudio)
 877                         retval = tvaudio_getstereo(dev,dev->tvaudio);
 878                 break;
 879         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 880         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 881                 retval = getstereo_7133(dev);
 882                 break;
 883         }
 884         return retval;
 885 }
 886
 887 int saa7134_tvaudio_init2(struct saa7134_dev *dev)
 888 {
 889         DECLARE_MUTEX_LOCKED(sem);
 890         int (*my_thread)(void *data) = NULL;
 891
 892         /* enable I2S audio output */
 893         if (saa7134_boards[dev->board].i2s_rate) {
 894                 int i2sform = (32000 == saa7134_boards[dev->board].i2s_rate) ? 0x00 : 0x01;
 895
 896                 /* enable I2S output */
 897                 saa_writeb(SAA7134_I2S_OUTPUT_SELECT,  0x80);
 898                 saa_writeb(SAA7134_I2S_OUTPUT_FORMAT,  i2sform);
 899                 saa_writeb(SAA7134_I2S_OUTPUT_LEVEL,   0x0F);
 900                 saa_writeb(SAA7134_I2S_AUDIO_OUTPUT,   0x01);
 901         }
 902
 903         switch (dev->pci->device) {
 904         case PCI_DEVICE_ID_PHILIPS_SAA7134:
 905                 my_thread = tvaudio_thread;
 906                 break;
 907         case PCI_DEVICE_ID_PHILIPS_SAA7133:
 908         case PCI_DEVICE_ID_PHILIPS_SAA7135:
 909                 my_thread = tvaudio_thread_ddep;
 910                 break;
 911         }
 912
 913         dev->thread.pid = -1;
 914         if (my_thread) {
 915                 /* start tvaudio thread */
 916                 init_waitqueue_head(&dev->thread.wq);
 917                 init_completion(&dev->thread.exit);
 918                 dev->thread.pid = kernel_thread(my_thread,dev,0);
 919                 if (dev->thread.pid < 0)
 920                         printk(KERN_WARNING "%s: kernel_thread() failed\n",
 921                                dev->name);
 922                 wake_up_interruptible(&dev->thread.wq);
 923         }
 924
 925         return 0;
 926 }
 927
 928 int saa7134_tvaudio_fini(struct saa7134_dev *dev)
 929 {
 930         /* shutdown tvaudio thread */
 931         if (dev->thread.pid >= 0) {
 932                 dev->thread.shutdown = 1;
 933                 wake_up_interruptible(&dev->thread.wq);
 934                 wait_for_completion(&dev->thread.exit);
 935         }
 936         saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
 937         return 0;
 938 }
 939
 940 int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
 941 {
 942         if (dev->thread.pid >= 0) {
 943                 dev->thread.mode = UNSET;
 944                 dev->thread.scan2++;
 945                 wake_up_interruptible(&dev->thread.wq);
 946         } else {
 947                 dev->automute = 0;
 948                 saa7134_tvaudio_setmute(dev);
 949         }
 950         return 0;
 951 }
 952
 953 /* ----------------------------------------------------------- */
 954 /*
 955  * Local variables:
 956  * c-basic-offset: 8
 957  * End:
 958  */